The Ubuntu Software Centre interface has been completely revamped in order to make it "a simpler and more enjoyable experience for browsing, searching, and managing your software". Support for new ARM sub-architectures has also been added. Other changes include a login screen that uses LightDM, multiarch support, an updated Alt+Tab switcher, and various new and updated packages. The official images are now available as Hybrid ISOs, allowing users to copy them directly to a USB device without the need for an external utility.

More details about the changes and new features in Oneiric Ocelot are available in the feature "What's new in Ubuntu 11.10" from The H Open.